A school trip has 168 pupils and 12 staff. Each coach seats 52 people. What is the smallest number of coaches needed?
Answer and explanation
Correct answer: B. 4
- Step 1: Total people: 168 + 12 = 180. Step 2. 180 ÷ 52 = 3.46, so 3 coaches are not enough. Step 3. The smallest whole number is 4. Answer: 4. Why not the others: 3: This seats only 156 people, which is fewer than 180. 5: This is more than needed, as 4 coaches seat 208 people. 3.5: This is 180 ÷ 52 rounded, but half a coach cannot be hired.
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